Life is a Long Quiet River: Wait, was it really just an experiment?

Okay, so I just rewatched Life Is a Long Quiet River ('La vie est un long fleuve tranquille' for you fancy folks). Criminally underrated, I gotta say. That scene where Momo (Patrick Bouchitey) tries to hustle Maurice (Benoît Magimel) into the dance... pure gold. But it got me thinking, beyond the obvious class commentary: Were the Quesnoys really that naive? I mean, the whole thing hinges on Dr. Mavial’s (André Wilms) and his colleague’s little social experiment, right? Seeing what happens when you drastically change someone's life like that. But here's my hang-up: Madame Quesnoy (Hélène Vincent) is supposed to be devastated by the switch, but something always felt off to me. Hear me out – what if she suspected something all along, maybe even subconsciously, but didn't REALLY want to know for sure? Think about it: she's so uptight and controlled, always concerned with appearances. The revelation throws her world into chaos, true, but it also kinda... frees her? Like she finally has an excuse to ditch the perfect facade. "What we've got here, is failure to communicate," right? Except maybe she was communicating, just non-verbally, with Dr. Mavial all along. And then there's the ending. Things are all seemingly hunky-dory, everyone's hugging and singing. But is it REALLY a happy ending? Everyone's still living close by each other, the tensions haven't magically disappeared. It's more like an uneasy truce. Maybe the real experiment wasn't just seeing how the kids would turn out, but how the parents would adapt. Dr. Mavial definitely got more than he bargained for. He wanted to see if nature or nurture was stronger, but he ended up unleashing a whole mess of human messiness. Just a thought, folks. What do you all think? Am I reading too much into this, or is there something more sinister lurking beneath the surface of this 'comedy'? It's like they say, "Well, nobody's perfect."...especially when it comes to ridiculously complex family dynamics fueled by medical malpractice.